Angle and Polarization Dependent Characteristics of Colloidal Quantum Dot Absorption in Fano Filters on Flexible Substrates

Abstract

We report theoretical and experimental investigations of infrared absorption characteristics for PbSe colloidal quantum dots in defect-free photonic crystal (PC) cavities, via Fano resonances. Angle and polarization independent transmission and absorption are feasible for surface normal incident beams with dispersion engineered modal design. Experimental demonstration was done on patterned single crystalline silicon nanomembranes (SiNMs) transferred on glass and on flexible PET substrates, with PbSe QDs backfilled into the air holes of the patterned SiNMs. These findings enable the design of spectrally selective photodetectors at near infrared regime with the desired angle and polarization properties.

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Document Details

Document Type
Technical Report
Publication Date
Jan 25, 2009
Accession Number
ADA574908

Entities

People

  • Gail J. Brown
  • Hongjun Yang
  • Huiqing Pang
  • Jian Xu
  • Ming-Jia Li
  • Weidong Zhou
  • Zexuan Qiang
  • Zhenqiang Ma

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Crystal Structure
  • Crystals
  • Dacron
  • Lasers
  • Manufacturing
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Military Research
  • Nanotechnology
  • Photonic Crystals
  • Quantum Dots
  • Semiconductors
  • Spectra
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Nanofabrication and Microfabrication.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Spectroscopy.

Technology Areas

  • Quantum Computing